1. Using an ohmmeter, check resistance of the relay of break of a chain between contacts of ST and E1 and contacts of ID and IC which has to be equal 0. Resistance between contacts of B and FR has to be equal to infinity.

2. Using additional wires, connect the accumulator to contacts of the relay of break of a chain of ST and E1. Thus resistance between contacts + has to be equal to B and FP 0.